Fireplace heating furnace



Patented ug. 26,1930

UNITED STATES PATENT OFFICE L CHESTER E. RADFORD, OF ORLANDO, IELRIDA, ASSIGNOR OF ONE-HALF T ARTHUR W.

VHAYES, 0F ORLANDO,FLORIDA, AND ONE-HALF T0 F.

PLACID, NEW YORK FIREPLACE HEATING FURNACE My invention relates to fireplaces, and it consists in the constructions, arrangements and combinations herein described and claimed.

It is an object of my invention to provide a iireplace wherein air is heated and discharged into a room, in addition to utilizing radiation of heat from the fireplace itself. It is a further object oi the invention to provide a fireplace wherein a tire-box denes passageways for admission of cold air and the exit of heated, purified air into a room.

4It is a still further object of the invention to provide a lire-box oit such structure as to be readily installed in the usual open fireplace.

Additional objects, advantages and features of invention will be apparent from the following description and drawings, wherein 'Figure 1 is a front elevation of a fireplace constructed in accordance with my invention, a portion thereof being broken away.

' Figure 2 is a vertical sectional view on the line 2 2 of Fig. 1.

Figure 3 is a cross-section on the line 3-3 ot Fig. 1.

Figure 4 is a vertical sectional view on the line -iwa of Figure 1.

Figure 5 is a perspective view of the metallic lining.

In carrying out my invention, I make use oi a "iireplacc, generally indicated by the reference character A, .which may be of any well. known construction' having a lire chamber B and flue C. lVithin the chamber B there is disposed a fire-box composed of a back plate 1 and side plates 2. The back plate 1 has grooves 16 adjacent the ends to receive one end ot the side plates 2 therewithin. The joint between the grooves 16 and the plates 2 may be suitably cemented in order to provide a tight seal therebetween to prevent leakage oi' gases or smoke therethrough. v

The plate 1 has a plurality of vertical'ribs 17 and a horizontal rib 11 connects the ribs 17 at the upper edge, to provide a support for lire-brick as well as reinforcement of ther tion are oi a size to lie flush with the openingr of the chamber B and stop short of the rear Wall of the chamber a suitable distance, thus forming a heat compartment 8. The edges of the plates- 2 engaged within the grooves 16 of the plate 1 are tapered from the bottom edge to the upper edge, thereby providing a iirebox of ample heat radiating surfaces at the lower portion, with a relatively restricted throat portion for registry with thel smoke flue C, in order to accommodate'escape of smoke and gases.

'Reference is now made to Fig. 5, wherein it is seen that the side plates 2 are provided with intregal iins Sand disposed at the lower and upper portions of the plates, respectively. As shown in Figs. 1 and 4, these iins support fire-brick 13a Vand lhand thus deline a hot air compartment 8a on each side of the fire-box. It should be noted that the lire-brick 13L supported 'by ther iin 9 is of greater width Vand lengththan theiire-brick 13" supported-by theiin 1() and stops short closely adjacent therear wall of the chamber .The top of the rear chamber 8 is elosedby lire-brick 12,'one'end thereoiI resting rupon the vrib 11 of the back plate while the oppo'- site end may be supported by an angle iron ably lined with iireeclay 14- and asbestos' 15,

this being well understood in the art. `Upon the front face of the fireplace, I prolvide air inlets and outlets 6 and 7, respectively. lThe inlets 6 are formed at opposite sides of theV fire-chamber and adjacent the lower part thereof; while the outlets 7 are disposed at theupper part of the fireplace but in line with the inlets 6, as shown in Figs. 1 and 2.

The operation of t-he device is easily understood. The cold air enters the register 6, as indicated by the arrow 18 of Figure 4. The air then passes through the passageway 19 and thence behind fire-brick 13a andvinto heating chambers 8 and 8, as indicated by thevarrows 20 andv21, respectively. The unj equal' heating of portions of the walls l an(l PAUL STEVENS, 0F LAKE j 2 surrounding the heating chambers 8 and 8 cause convection currents to be set up in the air stream, thereby assuring movement of said air throughout said chambers. The arrow 23 in chamber SiL indicates the movement of the air thereinto. The air upon be ing heated within these chambers expands and due to its decreased density relative to the incoming cooler air is forced into the re stricted passage behind the fire-brick 13" and into the passage 24, as indicated by the arrows 25 and 26. The air then passes into passageway 27 which communicates with register 7 to discharge said air back into the room, as indicated by arrows 28 and 29. It is obvious that the fire-brick 13a and 13b being heat-storing means will serve to maintain the heating chambers at a high and more uniform temperature. It is also easily seen that due to the projection of the fire-brick 13 to the rear of the fire-brick 13b convection currents will be set up that will augment the flow of the air from the heating chambers 8 and 8 into the passages 211, as indicated by arrows 25 and 26.

I claim 1. The combination ot a fireplace having a Hue, a fire-box in communication therewith, said fire-box comprising back and side walls, lateral fins carried by said side walls, heat storing means supported by said lateral fins and forming with said side walls and the walls of said fireplace, hot air chambers upon each side of said firebox, air inlets below said side chambers, arranged to discharge air to the rear of and into said side chambers and hot air outlets in communication with said side chambers.

2. The combination of a fireplace having a flue, a fire-box in communication therewith, said fire-box comprising back and side walls, a lateral fin projecting from said back wall, a sup )ort projecting from the rear wall of said replace, heat storing means supported by said fin and said support to form with said back wall and the Walls of said fireplace, a hot air chamber at the rear of the fire-box, air inlets below said chamber arranged to discharge air into said chamber and hot air outlets in communication with said chamber.

3. In combination with a fireplace having a back wall, a fire-box therein, said fire-box having back and side walls and being spaced from the back wall of said fireplace, the back Wall of said fire-box being inclined forwardly at the upper portion to form in cooperation with the walls of said .fireplace a hot air chamber of Varying cross sectional area, heat-storing means disposed between the upper portions of said fire-box and the back wall of said fireplace and cold air inlets and hot air outlets in communication with said hot air chamber.

a. A fire-box for fireplaces or the like, comprising side walls and a back wall, fins positioned on said side walls and a fin positioned on said back wall and heat storing means supported by said fins for cooperation with the walls of said fire-box and the fireplace to define chambers for the passage of air there-through.

5. The combination of a fireplace having a flue, a fire-box in communication therewith, said fire-box comprising back and side walls, upper and lower lateral fins carried by said si de walls, said upper fins being shorter than said lower fins, a fin carried by said back wall, heat storing means mounted on said side fins amil said back fin and forming with 'the said side Valls and back wail and the walls oi the fireplace, inter-communicating hot air chambers upon the side and in the rear of said fire-box, air iniets below said chambers arranged to discharge air to the rear of and into said side chambers and rear chambers about the ends of said lower fins and hot air outiets comprising passages at the rear of `said upper fins in communication with said hot air chambers.

Y' mm1 .1, signature tins j ci Y Sth day ol January, ri. l),

CHESTER E. RADFORD.

llO 

